/Engine/Plugins/Online/OnlineFramework/Source/Party/Public/Chat/SocialChatMessage.h
FSocialSystemChatMessage ( const [FString](API\Runtime\Core\Containers\FString) & InSourceName, const [FString](API\Runtime\Core\Containers\FString) & InMessageBody, [ESocialChannelType](API\Plugins\Party\Chat\ESocialChannelType) InSourceChannelType, [EChatSystemMessagePurpose](API\Plugins\Party\Chat\EChatSystemMessagePurpose) InPurpose )